Sevenfold

Tetris meets crosswords

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July 12, 2025 Tetris meets crosswords

Hey Indie Hackers! 👋

This week I launched Sevenfold, my first puzzle game. Each day, you try to fit 7 Tetris-like blocks into a unique grid, with three difficulty levels. Solve them fast enough and you might make it onto the daily leaderboard.

The puzzles are generated by a Rust algorithm I built that explores millions of combinations, only keeping puzzles with exactly one solution. It analyzes placement options and forced moves which I use to determine each puzzle’s difficulty.

Would love to hear some feedback on the gameplay and the app itself.

👉 Try it here: https://play7fold.com

Follow the journey on Twitter: @romflorentz

—Romain

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About

I have always been a fan of puzzles. Sevenfold is my attempt to create a puzzle that is simple to grasp yet non-trivial to solve.